//RedigerKategori.aspx

<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">

    <table class="tdborder">
        <asp:Literal ID="litRedigerSlet" runat="server"/>
    </table>
    <asp:Button ID="btnOpdater_Click" runat="server" Text="Opdater" />

</asp:Content>

//RedigerKontakt.aspx.cs

Kategori k = new Kategori();
    KategoriFac kf = new KategoriFac();

    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            foreach (var list in kf.GetAllOrderList())
            {
                litRedigerSlet.Text += "<tr><td class=\"tdborder\">" + list.Sortering + "</td><td class=\"tdborder\">" + list.Navn + "</td><td class=\"tdborder\">" +
                                       "<a href=\"RedigerKategori.aspx?slet=" + list.ID + "\" onclick=\"javascript:return confirm('Vil du slette " + "?') + \">Slet</a></td><td class=\"tdborder\">"
                                     + "<a href=\"../test.aspx?rediger=" + list.ID + "\">Rediger</a></td></tr>";
            }
        }

        if (!string.IsNullOrEmpty(Request.QueryString["slet"]))
        {
            int id = int.Parse(Request.QueryString["slet"]);

            kf.Delete(id);
            Response.Redirect("RedigerKategori.aspx");
        }
    }

---------------------------------------------------------------------------------------------

test.aspx

<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">
    <table>
            <tr>
                <td>
                    Navn:
                </td>
                <td>
                    <asp:TextBox ID="txtNavn" runat="server" />
                </td>
            </tr>
            <tr>
                <td>
                    Sortering:
                </td>
                <td>
                    <asp:TextBox ID="txtSort" runat="server" />
                </td>
            </tr>
            <tr>
                <td>
                    <asp:Button ID="btnUpdate" runat="server" Text="Opdater" OnClick="btnUpdate_OnClick" />
                </td>
            </tr>
            <tr>
                <td>
                    <asp:RequiredFieldValidator ID="rfvNavn" runat="server" ControlToValidate="txtNavn" ErrorMessage="Du skal skrive et navn til kategorien"></asp:RequiredFieldValidator>
                    <asp:RequiredFieldValidator ID="rfvSort" runat="server" ControlToValidate="txtSort" ErrorMessage="Du skal tildele en sortering til kategorien"></asp:RequiredFieldValidator>
                </td>
            </tr>
        </table>

</asp:Content>

test.aspx.cs

Kategori k = new Kategori();
    KategoriFac kf = new KategoriFac();
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            if (!string.IsNullOrEmpty(Request.QueryString["rediger"]))
            {
                int id = int.Parse(Request.QueryString["rediger"]);

                k = kf.Get(id);

                txtNavn.Text = k.Navn;

                txtSort.Text = k.Sortering.ToString();
            }
            else
            {
                Response.Redirect("Admin/RedigerKategori.aspx");
            }
        }
    }

    protected void btnUpdate_OnClick(object sender, EventArgs e)
    {
        int id = int.Parse(Request.QueryString["rediger"]);
        k.ID = id;
        k.Navn = txtNavn.Text;
        k.Sortering = int.Parse(txtSort.Text);

        kf.Update(k);
        Response.Redirect("Admin/RedigerKategori.aspx");
    }